59" ELB MODEL 15-800 CNC SUPER PRECISION VERTICAL ROTARY

Max. grinding diameter 59"
Max. grinding height 31"
Grinding depth of spindle 16"
Max. table load 2640 lbs.
Tilting range of grinding spindle +/- 105 deg.
Grinding wheel diameter 305 mm
Micro-Granit is a material with excellent characteristics for high precis
ion
grinding machines. It is also a vibration absorbing (101 compared to Me
ehanite cast iron) and
guarantees best grinding results. The good thermostabilisation of this m
aterial
assures best results in high precision grinding tolerances in micron prec
ision.
Machine main dimensions L 6300 x W 3800 x
H 5700 mm
B-Axis
The electro-mechanical table drive guarantees a constant feed rate, even in
case of
a maximum table load. The continuous rotational movement also grants minimu
m
feed rates and that even in case of large table loads.
Rotary table diameter 59"
Table drive Worm and worm wheel
Drive motor AC motor
Table revolutions 0.2 - 20 RPM variable
Table bearings radial Guideway, plastic
coated
Table bearings axial High precision ball
bearing
Central lubrication Auto. with control
Axial true run +/- 0.0004"
Radial true run +/0 0.0001"

(CONT.)
X-Axis
Infeed of table is performed electromechanically via recircular ball scre
w and
variable AC motor. This drive system guarantees a constant table speed a
nd avoids heat even
with maximum load.
Guideway system Prism. flat guideways
Guideways Hydro-dynamic
Travel Max. 82.6"
Travel to the right 16"
Travel to the left 67"
Rapid motion 79"/min.
Infeed amount Variable
Measuring system Incremental, encoder
Resolution 0.00004"
Y-Axis
A special play-free adjustment of the spindle housing guarantees a unifor
m
fit within the spindle column ways. Vertical drive is accomplished with
variable AC-motor and ball screw.
Grinding column Meehanite cast iron
Prepared for Motor grinding spindle
Vertical guideways Prism. flat guideways
Guideway lubrication Hydro-dynamic
Rapid traverse 39.4"/min.
Infeed amount Variable
Measuring system Incremental,
measuring scale
Resolution 0.0004"
Z-Axis
The cross movement is carried out via ACME lead screw and variable
AC motor.
Cross slide Meehanite cast iron
Guideway system Prism. flat guideways
Guideway lubrication Hydro-dynamic,
auto.
Auto. cross movement 12" max.
Grinding head tilting
The swivelling is performed via worm and worm wheel.
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(CONT.)
The swivelling angle is infinitely variable by CNC control.
The clamping is carried out hydro-mechanically via CNC program.
Tilting range +/-105 deg.
Tilting setting 0 deg.
Vertical setting Incremental, encoder
Measuring system 0.001 deg.
Resolution
Mount for motor grinding spindle
Cartridge 4.7"
Offset to center 4.7" to the right
Grinding spindle cartridge
The grinding spindle is